Copyright Statement

Abstract

The need is growing for a better assessment
of population exposures to motor vehicle
exhaust in proximity to major roads and highways.
This need is driven in part by emerging
scientific evidence of adverse health effects from
such exposures and policy requirements for a
more targeted assessment of localized public
health impacts related to road expansions and
increasing commercial transportation. The
momentum for improved methods in measuring
local exposures is also growing in the scientific
community, as well as for discerning which
constituents of the vehicle exhaust mixture may
exert greater public health risks for those who
are exposed to a disproportionate share of roadway
pollution. To help elucidate the current
state-of-the-science in exposure assessments
along major roadways and to help inform
decision makers of research needs and trends,
we provide an overview of the emerging policy
requirements, along with a conceptual framework
for assessing exposure to motor-vehicle
exhaust that can help inform policy decisions.